Power wrench



July 5', 1-92 7. 1,634,602

R. A. WILSON POWER WRENCH Filed Jan. 2. 1926 5 Sheets-Sheet 1 I K I Cuban-w R. A. WILSON POWER WRENCH July 5 1927.

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Filed Jan. 2, 1926 5 Sheets-Sheet 4 YIIIIJ IIIIIIII/I VIIIIIIIIIIIIIIII I III IIIIIIIIII/l July 5,1927. 1,634,602

- R. A. WILSON POWER WRENCH Filed Jan. 2. 1926 5 Sheets-$heet 5 3 wuznfoz increasing the power applied by swinging a Patented July 5, 1927.

UNITED STATES PATENT OFFICE.

ROBERT A. WILSON, OF DALLAS, TEXAS, ASSIGNOR TOv THE GUIIBERSON CORPORATION, OF DALLAS, TEXAS, A CORPORATION OF DELAWARE.

rowan WRENCH.

Application filed January 2, 1926. Serial No. 78,806.

engaging the individual members of a joint coupling, together with means for swinging the wrench members in opposite directions, whereby the joint 1s broken or rotated sufficlently'either to free the coupling members or to screw them together.

A further ob ect 18 to provide means tor lever, to a point of exerting sufficient force to operate the joint breaking members.

Another object is to provide oppositely the joint engaging means for movlng in opposite directions.

A still further object is to provide means for compounding the leverage, whereby ample power is applied to break the obstinate joint.

A particular object of the invention is to provide a wrench which may be operated with considerable speed as well as developing sufiicient power to perform its work.

Another object of the invention is to provide the support of the wrench with means whereby it may be movably suspended so as g to be more easily handled and also more readily applied to the work; as well as compensating the swing of the joint-engaging members when thelatter are pivoted .to the actuating bars. 7

A construction designedto carry out the. invention will be hereinafter described together with other features of the invention.

The invention will be more readily under stood from a reading of the following specification and by reference to the accompanying drawings, in which an example of the invention is shown, and wherein;

. Fig. 1 is an elevation of a wrench constructed in accordance with my invention, and in position on a joint;

Fig. 2 is a plan view of the same.

Fig. 3 is an elevation of the wrench carriage, a portion being in section;

Fig. 4 is an enlarged sectional view taken on the line 4L4 of Fig. 3;

Fig. 5 is a side View of the carriage of a modified form, a portion being in section;

Fig. 6 is an elevation of the same;

Fig. 7 is a transverse sectional view taken on theline 777 of Fig. 8. a portion being in section; u I

Fig. 8 is a side elevation of another form in which the invention may be carried out;

Fig. 9 is a transverse sectional view of still another form, a portion being in section;

-Fig. 10 is a transverse sectional view of another form, a portion being in section;

Fig. 11 is a side view of another form of connecting the actuating bars and the joint engaging member 1 Fig. 12 is a plan view of a further modification of the forms in which the invention movable operating members for swinging} may be carried out; members, together with said operating members Fig. 13 is a side view of the same partially in section gand f I Fig. 14 is an end view. of the same.

This application is .a continuation in part of my former application filed October 9, 1924, Serial No. 742,562.

- .In the drawingsthe numeral 10 designates a wrenchcarriage which may be of any suitable construction, and'is shown in Figs. 7

'17 fastenedon its rear end. The handle bar has rearw'ardly directedhandles 18 on its ends. A pinion 19 is confined in a slot 20 in the web 12 and is fastenedupon the shaft.

The. rack-bars -13,have their teeth in mesh with thepinion, WVh'en the handle bar 1;? is

revolved the, pinion is revolved and the bars are moved in opposite direction. The carriage has an eye 21 which may receive a hook of a supporting line (not shown) in the derrick, whereby the carriage 10 is movably suspended.

The heads 1 1 are located on opposite ends of the bars 13 and receive wrench members 22 which latter have rigid jaws 23. In

Figs. 1 and 2 is shown a tubular joint com-' posed of an upper coupling A and a lower coupling B, said coupling having wrench C for receiving the jaws 23. The wrench members 22 are formed so that when their jaws are in engagement with'the cou-* plings, their shanks will diverge, their rear ends are spread apart.

Each member 22 has a 'tenon 2 1 at its rear whereby end bent parallel to the shaft 16 and in-' 7 33 extending into the main housing 30. A

' shaft 36.

on the shaft 36 and is driven by a pinion spur gear3 is keyed on the shaft 33 and is driven by a pinion 35 mounted on a counter- A second gear 37 is also fastened 38. A shaft 16' corresponding to the shaft 16 on which the handle bar 17 is fastened, is mounted in the housing and has a spindle 39 on its'iiinei' end bearing in a socket in the end of the shaft 33.

It will be seen that in the form shown in Figs. 1 to 1, the turning force applied to the handle bar 17 is imparted direct to the pinion 19, and while an advantage is had through the leverage of the handle, it would be laborious to break an extremely tight joint. In the form shown in Figs. 5 and 6 the leverage is multiplied or compounded reason of the gear 37, pinion 35, and

and suiiicient force will be applied to the pinion. 19 to move the bars 13 and readily break any joint.

In operating the wrench the carriage 10 or is hung in the derrick by the tackle-in the usual manner, the eye 21 or 32 being provided for this purpose. The rack-bars 13 are adjusted to the position shown in Figs. 1 and 2. The wrench members 22 are enga ed with faces C of the couplings A and By revolving the handle bar 17 rotation is imparted to the pinion 19 and 'the bars 13 arethus moved rapidly outwardly, whereby the members 22 are spread and the aws 23 are swung in opposite directions. The tenons 24.- are long enough to remain in the sockets 15 during the inovement'ot the bars.

However, the carriage being suspended and free to swing, it is not necessary for The carriage comprises a its outer end.

rotation may be completed with the usual wrench. It will be seen that this wrench may be used to tighten a joint by spreading the IitCK-bilIS 13 and then operating them to swing the members 22 together. My invention may be advantageously used with the type of joint shown in my Letters Patent No. 1,507,877, issued September 9, 1924.

It will be atonce apparent that many different structures may be evolved in carrying out the invention and I have endeavored to illustrate some of these different forms.

In Figs. 7 and 8 1 have shown'an L-shaped carriage lOsuspended by an eye 41. A pair of'miter gears 4-2 and 43 are journaled in the housing and the gear 42 has a double hub 4e} extending through the housing. Transverse bars 15 are secured in the said hub so as to be rotated bythe latter. On

members 22 are pivoted on studs 49carried by the blocks.

In Fig. 9 the gear 42 is fastened centrally on an elongated sleeve 50 which is ournaled in the carriage 4-0. The'sleeve has righthand screw tlireads 51 in one portion of its bore and left-hand screw-threads 52in the opposite portion of its bore. Correspondingly screw-threaded bars. 53 and 54, respectively engage in the tl'ii'eads 51 and 52, and each bar has a socket-or loop 55 on r The tenons 24 of the wrench members 22 are pivoted on bolts 56 in-the sockets.

Fig. 10 presents another form in which bars 60- extendfrom the 'hub' 4 1 of the gear 42. One of the bars has right-hand screwthreads 61, while the other'has left-hand screw-threads 62. The bars engage in externally screwed barrels or members 63 having heads on their outer ends to which the tenons 2a of the member 22 are pivotedby bolts 65. r

In connection with the forms shown in Figs. 71t0 10 inclusive, it will be seen that upon rotating the gears 12 and 13by the shaft- 16, the bars 45 and 60 or the sleeve 50 is rotated. This causes the parts con- Him til)

nected with the tenons 24 to be moved'toward each or spread apart. whereby the wrench members 22 are actuated. In Fig. 11 a clevis type of connection 66 is shown pivoted to the tenon 24.

By suspending the carriage it is possible to make quite a variation in the wrench structure, and such an example is given in Figs. 12, 13 and 14'. A cylindrical carriage 7 0 is suspended by a hook 71 and one of the wrench members 22 is fastened rigidly to the bottom of the carriage. A segmental rack-bar 72 is slidable transversely of'the top of the carriage on a guide 73 and has upstanding lugs 7a at its central portion. The upper wrench member 22 has a reduced finger 75 at its end engaging loosely between the lugs.

The rack-bar 72 is'driven by a gear 76 and is connected to any suitable planetary differential gearing, such as is indicated in Fig. 13. The gear is driven by the shaft 16 on which a hand wheel 77 is mounted. In operating this form the hand wheel 77 is revolved and motion transmitted to the gear 7 6, whereby the rack-bar 7 2 is actuated. This causes the upper wrench member 22 to be swung while the lower member 22 remains stationary and so holds the lower joint B.

' The handle 17 or other operating means may be readily spun or rapidlyrevolved and this makes for quick operation, which is highly desirable, because time is one of the most important elementsin the drilling of wells and the handling of sucker rods and the like.

Various changes in the size and shape of the different parts, as well as modifications and alterations, may be made within the scope of the appended claims.

lVhat I claim, is:

1. In a joint breaking wrench, a carriage, a pair of oppositely sliding bars mounted therein and each having wrench connecting means at one end of the carriage, wrench members having jaws and opposite operating ends movably embraced by the connecting means to travel in opposite directions with the bars, and means for oppositely movingsaid bars to swing the wrench members.

2. In a joint breaking wrench, a carriage, a pair of oppositely movable bars having sockets and mounted in said carriage, a pair of wrench members having jaws and free ends embraced by said sockets for movementtherewith in the opposite travel of the bars,

and means for sliding the bars in opposite directions to swing the wrench members.

3. In a joint breaking wrench, a carriage, a pair of oppositely movable bars having sockets and mounted in said carriage, a pair of wrench members having jaws and free ends embraced by said sockets for movement therewith in the opposite travel of the bars,-

a pinion interposed between the bars for wrench membersthereby in opposite directions'.

5. In a joint breaking wrench, a carriage comprising complementary members provided with parallel guldeways and an intermediate transverse web, oppositely movable rack-bars disposed 111 the guideways and separated by the web, apertured heads at the outer ends of the rack-bars forming sockets, a pinion pivoted in said members intermediate therack-bars to actuate the same, a hand-operated member for rotating said pinion, and wrench members having jaws and free ends slidable in the sockets in the opposite movements of the jaws.

('3. In a joint breaking wrench, a carriage,

oppositely movable actuating members mounted therein, a plurality of swinging wrench members having joint engaging jaws at their outer ends and their opposite ends being positively connected to the actuating members for movement therewith in either direction, and means for moving said actuating members in unison.

7. In a joint breaking wrench, a support, a pair of oppositely movable actuating members mounted therein, a pair of wrenches having jaws and opposite operating ends connected to said members to effect a simultaneous travel ot both wrenches, means for jointly operating said members, and means for movably suspending the support.

8. In ajoint breaking wrench, a support, a pair of oppositely movable actuating members mounted therein, a pair of wrenches having jaws and opposite operating ends connected to said members to effect a travel of both wrenches toward and from each other and in opposite directions, means for I jointly operating said members, and means for movably suspending the support.

9. In a joint breaking wrench, a support, oppositely movable sliding members mounted therein, a pair of wrenches having jaws and opposite operating ends slidingly and pivotally connected .to said members to effect a travel of one wrench in one direction and the other wrenchin an opposite direction,

and means for operating said members in unison.

10. In a joint breakin wrench, a carriage, means for suspending t- 1e carriage opposite the joint to be worked upon, upper and lower wrench members having jaws for engaging the upper and lower couplings of the joint,- a'nd means for actuating the wrench members to break or fasteirt-l'iefljoi nt;

11'. In a joint brealdng wrench, a carriz'ige, the carriage being movable toward and from the joint, means for suspending the carriage opposite the joint to be worked upon, upper and lower wrench members having jaws for engaging the upper and lower couplings of the joint, and means for actuating the wrench members to break or fasten the joint.

12. In a joint turning wrench, a carriage, means for supporting the carriage opposite the joint to be worked upon, upper and lower wrench members having jaws for engaging the upperand lower couplings of the joint, oppositely movable members positively connected with said wrench members for swinging said wrench members toward or away from each other,said wrench members being held against movement longitudinally of the movable members, an operating-elementconnected with said movable members, and means for operating said element.

13. In a. joint turning wrench, a carriage, means for movably suspending the carriage opposite the joint to be worked upon, said carriage being free to move toward and from the joint, upper and lower wrench members having jaws for engaging the upper and lower couplings of the joint, oppositely movable members to which the wrench members are positively connected for swinging in either direction, and means actuating the movable members in opposite directions.

In testimony whereof I, afiix my signature.

ROBERT A. l VILSO'N. 

